Electric-field-controlled electron relaxation in lateral double quantum dots embedded in a suspended slab

被引：3

作者：

Liao, Y. Y. ^{[1
]}

Chuu, D. S. ^{[2
]}

Jian, S. R. ^{[3
]}

机构：

[1] Natl Univ Kaohsiung, Dept Appl Phys, Kaohsiung 811, Taiwan

[2] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 300, Taiwan

[3] I Shou Univ, Dept Mat Sci & Engn, Kaohsiung 840, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 104卷 / 10期

关键词：

electric fields; gallium arsenide; III-V semiconductors; phonons; relaxation; semiconductor quantum dots;

D O I：

10.1063/1.3009960

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This study investigates phonon-induced electron relaxation in a lateral double quantum dot that is embedded in a suspended slab. Exact calculations are made in electric fields. The dependence of the relaxation rate on the parameters of the dots and the slabs is analyzed. Numerical results indicate that the relaxation rate depends strongly on the phonon character of the slab. Unlike in the bulk environment, phonon-subband quantization clearly influences the behavior. In particular, the relaxation rate can be greatly suppressed or enhanced by tuning the electric fields. This fact may be useful in manipulating the relaxation rate in lateral double quantum dots.

引用

页数：5

共 37 条

[1]

Auld BA., 1973, Acoustic Fields and Waves in Solids

[2] ELECTRON RELAXATION-TIMES DUE TO THE DEFORMATION-POTENTIAL INTERACTION OF ELECTRONS WITH CONFINED ACOUSTIC PHONONS IN A FREESTANDING QUANTUM-WELL [J].

BANNOV, N ;

ARISTOV, V ;

MITIN, V ;

STROSCIO, MA .

PHYSICAL REVIEW B, 1995, 51 (15) :9930-9942

[3] Reduced electron relaxation rate in multielectron quantum dots [J].

Bertoni, A ;

Rontani, M ;

Goldoni, G ;

Molinari, E .

PHYSICAL REVIEW LETTERS, 2005, 95 (06)

[4] Field-controlled suppression of phonon-induced transitions in coupled quantum dots [J].

Bertoni, A ;

Rontani, M ;

Goldoni, G ;

Troiani, F ;

Molinari, E .

APPLIED PHYSICS LETTERS, 2004, 85 (20) :4729-4731

[5] PHONON-SCATTERING BETWEEN ZERO-DIMENSIONAL ELECTRONIC STATES - SPATIAL VERSUS LANDAU QUANTIZATION [J].

BOCKELMANN, U .

PHYSICAL REVIEW B, 1994, 50 (23) :17271-17279

[6] PHONON-SCATTERING AND ENERGY RELAXATION IN 2-DIMENSIONAL, ONE-DIMENSIONAL, AND ZERO-DIMENSIONAL ELECTRON GASES [J].

BOCKELMANN, U ;

BASTARD, G .

PHYSICAL REVIEW B, 1990, 42 (14) :8947-8951

[7] MAGNETOCONDUCTIVITY OF QUANTUM WIRES WITH ELASTIC AND INELASTIC-SCATTERING [J].

BRUUS, H ;

FLENSBERG, K ;

SMITH, H .

PHYSICAL REVIEW B, 1993, 48 (15) :11144-11155

[8] Strongly capacitively coupled quantum dots [J].

Chan, IH ;

Westervelt, RM ;

Maranowski, KD ;

Gossard, AC .

APPLIED PHYSICS LETTERS, 2002, 80 (10) :1818-1820

[9] Addition spectrum of a lateral dot from Coulomb and spin-blockade spectroscopy [J].

Ciorga, M ;

Sachrajda, AS ;

Hawrylak, P ;

Gould, C ;

Zawadzki, P ;

Jullian, S ;

Feng, Y ;

Wasilewski, Z .

PHYSICAL REVIEW B, 2000, 61 (24) :16315-16318

[10] Phonon-induced electron relaxation in weakly confined single and coupled quantum dots [J].

Climente, Juan I. ;

Bertoni, Andrea ;

Goldoni, Guido ;

Molinari, Elisa .

PHYSICAL REVIEW B, 2006, 74 (03)

← 1 2 3 4 →